| Abbreviation | Definition |
|---|---|
| USCC | United States Consensus Council |
| USCCF | United States Chess Center Foundation |
| USCGI | United States Coast Guard Institute |
| USCMA | United States Catholic Mission Association |
| USCMA | United States Colombian Medical Association |
| USCP | United States Coast Pilots |
| USCT | United States Chess Trust |
| USCUNIFEM | United States Committee for the United Nations Development Fund for Women |
| USCV | U.S. Count Votes |
| USF | Unit Scholarship Fund |
| USFA | United States Fencing Association |
| USFF | United States Freedom Foundation |
| USFG | United States Faceters Guild |
| USFR | Utah Society of Fund Raisers |
| USGBC | United States Green Building Council |
| USH | United Support for Humanity |
| USHA | United States Handball Association |
| USLA | United States Lifesaving Association |
| USMBC | Upper Shore Manufacturing Business Council |
| USMCC | United States Military Cadet Corps, Inc. |